Hurley, P. J. (2000). A concise introduction to logic (7th ed.). Wadsworth.
Cita Chicago (17th ed.)Hurley, Patrick J. A Concise Introduction to Logic. 7th ed. Belmont, CA: Wadsworth, 2000.
Cita MLA (9th ed.)Hurley, Patrick J. A Concise Introduction to Logic. 7th ed. Wadsworth, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.